A high-resolution, adaptive beam-shaping system for high-power lasers.

A high-resolution, high-precision beam-shaping system for high-power-laser systems is demonstrated. A liquid-crystal-on-silicon spatial light modulator is run in closed-loop to shape laser-beam amplitude and wavefront. An unprecedented degree of convergence is demonstrated, and important practical issues are discussed. Wavefront shaping for the applications in OMEGA EP laser is demonstrated, and other interesting examples are presented.

[1]  Seung-Whan Bahk.  Band-limited wavefront reconstruction with unity frequency response from Shack-Hartmann slopes measurements. , 2008, Optics letters.

[2]  J L Marroquin,et al.  Wave-front recovery from two orthogonal sheared interferograms. , 1996, Applied optics.

[3]  Janice K. Lawson,et al.  National Ignition Facility beamline pupil relay plane locations and imaging , 2002, International Optical Design Conference.

[4]  A. Alexandrov,et al.  Laser beam wavefront correction for ultra high intensities with the 200 TW laser system at the advanced laser light source. , 2008, Optics express.

[5]  Christophe Dorrer,et al.  Design and analysis of binary beam shapers using error diffusion , 2007 .

[6]  Joseph P. Kirk,et al.  Phase-Only Complex-Valued Spatial Filter* , 1971 .

[7]  C P J Barty,et al.  Interferometric adaptive optics testbed for laser pointing, wave-front control and phasing. , 2009, Optics express.

[8]  J P Huignard,et al.  Nearly diffraction-limited laser focal spot obtained by use of an optically addressed light valve in an adaptive-optics loop. , 1998, Optics letters.

[9]  H. Pépin,et al.  High-power short-pulse laser repetition rate improvement by adaptive wave front correction , 2004 .

[10]  Gerard Mourou,et al.  Characterization of focal field formed by a large numerical aperture paraboloidal mirror and generation of ultra-high intensity (1022 W/cm2) , 2005 .

[11]  C Dorrer.  High-damage-threshold beam shaping using binary phase plates. , 2009, Optics letters.

[12]  Lawrence G. Roberts,et al.  Picture coding using pseudo-random noise , 1962, IRE Trans. Inf. Theory.

[13]  Vincent Bagnoud,et al.  Independent phase and amplitude control of a laser beam by use of a single-phase-only spatial light modulator. , 2004, Optics letters.

[14]  A. Lohmann,et al.  Complex spatial filtering with binary masks. , 1966, Applied optics.

[15]  Jake Bromage,et al.  OMEGA EP : High-energy petawatt capability for the OMEGA laser facility , 2006 .

[16]  James R Fienup,et al.  Spot-shadowing optimization to mitigate damage growth in a high-energy-laser amplifier chain. , 2008, Applied optics.

[17]  M Liang,et al.  Approximating fully complex spatial modulation with pseudorandom phase-only modulation. , 1994, Applied optics.

[18]  Vincent Bagnoud,et al.  High-energy, high-average-power laser with Nd:YLF rods corrected by magnetorheological finishing. , 2005, Applied optics.